From a point P outside the circle with centre O, two tangents PA and PB are drawn to meet the circle at A and B respectively. If ∠APB = 70°, then ∠OAB is equal to∶

From a point P outside the circle with centre O, two tangents PA and P

1.	From a point P outside the circle with centre O, two tangents PA and PB are drawn to meet the circle at A and B respectively. If ∠APB = 70°, then ∠OAB is equal to∶
A.	35°
B.	65°
C.	45°
D.	55°
Answer» B. 65°

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From a point P outside the circle with centre O, two tangents PA and PB are drawn to meet the circle at A and B respectively. If ∠APB = 70°, then ∠OAB is equal to∶

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